/* 暗黑科技风格 */
.dark-theme {
    background-color: #0a0a0a;
    color: #e0e0e0;
}

.dark-header {
    background-color: rgba(10, 10, 10, 0.9);
    border-bottom: 1px solid #2a2a2a;
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.3);
}

.logo {
    color: #00a8ff;
    text-shadow: 0 0 10px rgba(0, 168, 255, 0.5);
}

.dark-hero {
    position: relative;
    height: 20vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.particles-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #001529 0%, #000 100%);
    z-index: -1;
    overflow: hidden;
}

.particles-background::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 150, 255, 0.3) 0%, transparent 25%),
        radial-gradient(circle at 80% 70%, rgba(0, 255, 150, 0.3) 0%, transparent 25%),
        radial-gradient(circle at 50% 20%, rgba(255, 100, 0, 0.3) 0%, transparent 25%),
        radial-gradient(circle at 30% 80%, rgba(255, 0, 200, 0.3) 0%, transparent 25%);
    animation: float 15s infinite alternate ease-in-out;
}

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(10%, 10%) rotate(5deg);
    }
    100% {
        transform: translate(-10%, -10%) rotate(-5deg);
    }
}
.dark-products {
    background-color: #121212;
    padding: 50px 0;
}

.product-card {
    background: #1e1e1e;
    border: 1px solid #2a2a2a;
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.1);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(0, 150, 255, 0.3);
}

.download-btn {
    background: linear-gradient(135deg, #0088ff 0%, #0044ff 100%);
    color: white;
}